High Sensitivity, 1 MHz, GMR-Based Current Sensor IC

in Space-Saving, Low Resistance QFN and SOIC-8 Packages

ACS70331

2

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

SELECTION GUIDE

Part Number

Current Sensing

Sens (Typ)

(mV/A)

(°C)

Package

ACS70331EESATR-2P5U3

0 to 2.5

800

–40 to 85

12-contact

QFN with fused

current loop

1500 pieces per reel

ACS70331EESATR-2P5B3

±2.5

400

ACS70331EESATR-005U3

0 to 5

400

ACS70331EESATR-005B3

±5

200

ACS70331EOLCTR-2P5U3

0 to 2.5

800

–40 to 85

8-lead SOIC

3000 pieces per reel

ACS70331EOLCTR-2P5B3

±2.5

400

ACS70331EOLCTR-005U3

0 to 5

400

ACS70331EOLCTR-005B3

±5

200

[1]

Contact Allegro for additional packing options.

ABSOLUTE MAXIMUM RATINGS

Characteristic

Symbol

Notes

Rating

Units

Supply Voltage

7

V

Reverse Supply Voltage

–0.1

V

Output Voltage

6

V

Reverse Output Voltage

–0.1

V

Working Voltage

Voltage applied between pins 1 to 4 and pins 5 to 12 (QFN)

or pins 1 to 4 and pins 5 to 8 (SOIC)

100

V

±10

A

B

±50

G

Nominal Operating Ambient Temperature

Range E

–40 to 85

°C

100

°C

Storage Temperature

–65 to 125

°C

[2]

Continuous currents above this may result in changes in performance. See lifetime drift section for sensor drift under different temperature and current conditions. Also,

see Thermal Performance and Overcurrent Capability section for allowable constant and transient currents.

[3]

Continuous magnetic fields above this may result in changes in performance.

[4]

The ACS70331 should be soldered using Allegro’s recommended soldering profile in (http://www.allegromicro.com/en/Design-Center/Technical-Documents/Semicon-

ductor-Packaging-Publications/Soldering-Methods-for-Allegro-Products.aspx). Standard soldering tips will over-stress the device, resulting in shifts in performance. For

rework, it is recommended to use hot plates and heat guns/pencils, keeping the temperature of the device below the Maximum Soldering Temperature.